Title:
IDENTIFICATION SIGNAL DETECTOR
Document Type and Number:
Japanese Patent JP2803450
Kind Code:
B2
Abstract:
PURPOSE: To detect an identification correctly when an identification signal representing segment information or the like inserted in one horizontal line of a video signal is detected by a VTR or the like.
CONSTITUTION: A synchronizing separator circuit 1 separates a horizontal synchronizing signal from a video signal and an identification signal detection pulse generating circuit 2 generates an identification signal detection pulse 9 based on the horizontal synchronizing signal. Moreover, a burst signal separation circuit 3 separates a burst signal and a band pass filter 4 applies band limit thereto. Then an automatic phase control circuit 5 generates a clock synchronously with a phase of the burst signal subject to band limit, and an identification signal detection pulse generating circuit 6 generates an identification detection pulse 10. Then a selection circuit 7 is used to select an identification signal detection pulse in response to the reproduction speed signal representing a reproduction speed of a magnetic tape or the like, and an identification signal detection circuit 8 detects an identification signal. The identification signal is stably detected in the low speed special reproduction mode and the identification is detected even in the high speed special reproduction mode.
More Like This:
Inventors:
Atsushi Kuroda
Ken Otsuka
Ken Otsuka
Application Number:
JP8179792A
Publication Date:
September 24, 1998
Filing Date:
April 03, 1992
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04N5/93; H04N5/92; (IPC1-7): H04N5/93; H04N5/92
Domestic Patent References:
| JP62234478A | ||||
| JP6361577A | ||||
| JP326079A | ||||
| JP2249383A |
Attorney, Agent or Firm:
Tomoyuki Takimoto (1 person outside)
Previous Patent: HOLDING DEVICE FOR OBJECT
Next Patent: REFRIGERANT COMPRESSOR, REFRIGERATOR, REFRIGERATING AIR CONDITIONER AND REFRIGERATING SYSTEM
Next Patent: REFRIGERANT COMPRESSOR, REFRIGERATOR, REFRIGERATING AIR CONDITIONER AND REFRIGERATING SYSTEM